在关系数据库中，无法表示为基本数据值的记录的对象必须通过数据库联结进行组装。
In a relational databases, objects that can't be represented as records of basic data values must be assembled through database joins.
还可以在关系数据和XML数据之间创建联结。
了解关系数据库、数据模型、惟一键、主键、外键和表联结。
Learn about relational databases, data models, unique keys, primary keys, foreign keys, and table joins.
因此，即使一部分数据位于关系表中，一些数据是XML，现在都可以在SQL查询、XQuery或这两者中在XML数据和关系数据之间进行动态联结。
Thus, even if some of the data is in relational tables and some is in XML you can now make dynamic joins between the XML and relational data from inside either the SQL query or the XQuery or both.
联结翼布局与常规布局相比具有结构重量轻、诱导阻力小、升力系数大和稳定性良好的特点。
The joined-wing configuration, as compared with the normal configuration, is characterized by low structural weight, small induced drag, big lift coefficient and good stability.
联结翼布局与常规布局相比具有结构重量轻、诱导阻力小、升力系数大和稳定性良好的特点。
The joined-wing configuration, as compared with the normal configuration, is characterized by low structural weight, small induced drag, big lift coefficient and good stability.
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